PICK OF THE DAY

Calling all angels

Thank MIX 104.1 for the power-packed lineup at Saturday’s MIXFest . Let’s start with Train, the Grammy-winning band responsible for “Calling All Angels” and “Hey Soul Sister.” More? How about Berklee College of Music alum Gavin DeGraw (above). Let’s add Andy Grammer and his hit, “Keep Your Head Up.” 4 p.m., rain or shine. Free. DCR Hatch Memorial Shell along the Esplanade, Boston. 617-931-2000. www.mix1041.com

SATURDAY

Italian idols The Teenage Tenors Piero Barone, Ignazio Boschetto, and Gianluca Ginoble are officially called Il Volo. The Italian singers’ latest release, “Il Volo Takes Flight – Live From the Detroit Opera House,” will melt your gelato with “O Sole Mio,” “Un Amore Cosi Grande,” and “Smile.” 7:30 p.m. $39.50-$79.50. Bank of America Pavilion, 290 Northern Ave., Boston. 800-745-3000. www.livenation
.com

Heroes In three days it will be the 11th anniversary of 9/11. To honor the heroes, Irish singer Pauline Wells and her friends from Boston Police Gaelic Column will be joined by the New York City Police Pipes and Drums at A Tribute to the Heroes of 9/11. Proceeds will benefit the construction of the Massachusetts Iraq and Afghanistan Fallen Heroes Memorial. 8 p.m. $32-$40. The Wilbur Theatre, 246 Tremont St., Boston. 800-745-3000. www.thewilbur.com

JP music licks More than 1,000 people attended last year’s freshman JP Music Festival. At this year’s sophomore event, take in the sounds of musicians who live or work in Jamaica Plain. More than two dozen acts will play funk, jazz, classical, hip-hop, and more. Noon-7 p.m. Free. Pinebank Field, beside the Jamaicaway on Perkins Street, Jamaica Plain. www.jpmusicfestival.com

SUNDAY

Back to school Leave your backpack at home but bring your mouth to massmouth’s “Schooled.” The story slam invites you to share your real moments of humiliation and embarrassment about when you got “schooled.” Ten tellers will randomly be chosen from the sign-up list. Sept. 9 from 6:30-9:30 p.m. $8, $10 at the door (reservations recommended). Doyle’s Café, 3484 Washington St., Jamaica Plain. www.massmouthjp.eventbrite.com

Friendship Amir and Hassan are friends in 1970s Afghanistan until the former leaves for the United States with his father. Thirty years later when he returns to help a sick friend, secrets are revealed. “The Kite Runner” is based on the 2003 best-selling novel by Khaled Hosseini. Presented by New Repertory Theatre. Sept. 9 at 7:30 p.m. (through Sept. 30). $28-$58 (discounts available). Arsenal Center for the Arts, 321 Arsenal St., Watertown. 617-923-8487. www.newrep
.org

Short order thanks You might be more familiar with this late-night eaterie in the middle of the night, but Sunday’s South Street Diner Customer Appreciation Day takes place during sunlight. Owner Sol Sidell meets, greets, and serves free burgers, dogs, and activities (pony rides, cartoonists, and more) inside and outside the 1947-built iconic spot. Sept. 9 from 2-6 p.m. Free. South Street Diner,
178 Kneeland St., Boston. 617-350-0028. www.southstreetdiner.com